Seat device for punching two pieces at one time through hot forging punching

Abstract

The utility model relates to a seat device for punching two pieces at one time through hot forging punching, which comprises two punch seats and punches which are symmetrically and obliquely arranged on an upper template, a lower die seat, two punching female dies and a supporting pipe, the two punching female dies are symmetrically arranged on the lower die seat, the punch seats and the punches penetrate through a material returning plate, and the punching female dies are positioned right below the punches; the die holder capable of punching two forgings at a time is designed for solving the problems that a working table of a punching press is large, punching force is small and equipment does not fully play a role, punching of two products can be completed through single punching, the machining efficiency is doubled, and the production period is shortened. The double-punch design reduces the idle stroke time of equipment, improves the output in unit time, is particularly suitable for large-batch production requirements, and can punch two forgings at a time through hot forging punching so as to improve the punching efficiency.

Description

TECHNICAL FIELD

[0001] The utility model belongs to punch die technical field relates to a seat device of hot forging punch one time punches two pieces. BACKGROUND

[0002] Punching is to punch the skin of the hole forging on the press, and the skin is a process material given in advance for forming a hole. Punching is carried out after die forging forming, and the forging temperature is still around 1000 DEG C. Punching is one of the subsequent processes after die forging. After the development trend of automation and the investment of high-efficiency high-energy spiral presses, electric presses and other equipment in the company, the main machine forging is one hammer forming, and the production frequency is fast, so it is necessary to improve the operation efficiency of each station. A die holder for punching two forgings at a time is designed to improve the punching efficiency due to the large workbench of the punching press and the small punching force. There is no public die structure for hot forging punching one time punches two pieces. CONTENT OF THE UTILITY MODEL

[0003] In view of the problems in the prior art, the utility model provides a seat device for hot forging punch one time punches two pieces, which realizes a die holder for punching two forgings at a time through scientific improvement, so as to improve the punching efficiency, forging quality and reduce the cost.

[0004] The utility model is realized through the following technical schemes:

[0005] A seat device for hot forging punch one time punches two pieces, comprising,

[0006] An upper die structure comprises an upper die plate, two punch holders symmetrically arranged on the upper die plate and a punch; the punch holder is installed in cooperation with the punch;

[0007] A lower die structure comprises a lower die holder, two punch concave dies symmetrically arranged on the lower die holder and a support pipe; the support pipe is arranged on the lower die holder, a material removal plate is installed at the top of the support pipe, the punch holder and the punch pass through the material removal plate, and the punch concave die is located directly below the punch;

[0008] Guiding mechanisms are arranged on the two sides of the upper die plate; the guiding mechanisms are located between the upper die plate and the lower die holder.

[0009] Preferably, the punch holder is connected with the punch through a long screw bolt; the head of the long screw bolt is embedded in the groove of the upper die plate, the rod of the long screw bolt passes through the center holes of the upper die plate and the punch holder in sequence and is threadedly connected with the punch, thereby forming a long screw bolt connecting punch quick-change structure; the punch holder and the punch are installed in cooperation through vertical surface contact positioning and radial small gap.

[0010] Preferably, the guide mechanism comprises guide posts and guide sleeves; the guide posts are arranged on both sides of the upper die plate, and the guide sleeves are embedded in holes of the lower die base; the guide posts and the guide sleeves are installed in clearance fit.

[0011] Preferably, the guide posts are fixed on the upper die plate through hexagonal screws.

[0012] The guide sleeves are fixed on the lower die base through inclined surface compression structures of guide sleeve compression covers,

[0013] The guide posts are fixed on the upper die plate through inclined surface compression structures of guide post compression covers.

[0014] The guide post compression cover is connected with the upper die plate, and the guide sleeve compression cover is connected with the lower die base.

[0015] Preferably, the guide sleeve adopts a two-section guide structure, comprising an upper mouth inclined preliminary guide section and a lower vertical guide section.

[0016] Preferably, the upper surface of the upper die plate is provided with a dovetail, the dovetail is fixedly connected with the upper die plate, and the upper die plate is connected with the workbench of the press through the dovetail.

[0017] Preferably, the piercing female die is fixed on the lower die base through compression iron.

[0018] Preferably, the center of the two punch holders forms an angle of 30º with the horizontal direction, the center line of the two piercing female dies forms an angle of 30º with the horizontal direction, and the distance between the two punch holders is less than 1 / 5 of the span of the standard press workbench in the horizontal direction.

[0019] Preferably, the cylindrical surface of the punch is provided with a milled flat groove, the lower die base is provided with an open groove at the position of the piercing female die, and the periphery of the upper die plate is provided with a U-shaped groove.

[0020] Preferably, the material return plate is provided with through holes through which the punch and the punch holder pass.

[0021] The lower die base, the support pipe and the material return plate are fixedly connected through hexagonal bolts.

[0022] Compared with the prior art, the hot forging punching device has the following beneficial technical effects:

[0023] (1) The hot forging punching device of the utility model can punch two pieces at a time, which is improved from one piece at a time, and the punching efficiency is obviously improved. The efficiency is doubled, the production cycle is shortened, the auxiliary punching is accumulated and can be quickly punched without long-time accumulation, the production rhythm of the main machine and the auxiliary machine is coordinated, or the auxiliary machine is faster than the main machine, and the forgings will not cause quality problems due to the auxiliary machine.

[0024] (2) Efficiency improvement reduces worker actions in the processing process, focusing on completing an action without considering action, not busy, reducing labor intensity.

[0025] (3) The seat device for hot forging and punching one-time punching of two pieces is designed for the case that the punching press workbench surface is large, the required force for single punching is small, and the tonnage of the press is large enough, so as to fully exert the equipment efficiency; under the condition of unchanged output, the press has half the number of strokes, improves the output per unit time, saves about 2 / 5 of the original method of electric energy, and is especially suitable for large-batch rapid production demand.

[0026] (4) The symmetrical design of the double punch and double concave die of the utility model balances the force in the punching process, uniformly distributes the stress, avoids unilateral partial load caused by the decline of the die holder precision, die deformation or cracking, and prolongs the service life of the die.

[0027] (5) The accurate alignment of the upper and lower die holders is ensured by the guide mechanism, the verticality and position accuracy of each punching are ensured, the punching size is consistent, the punching bite and inner hole tearing defects are avoided, and the defective product rate is reduced; the worker adjustment time is reduced; the centering of the upper and lower die holders ensures that the die impact is reduced, the wear is reduced, and the equipment stability is improved.

[0028] (6) The guide sleeve is designed with a two-section guide structure, that is, the inclined surface part of the upper part of the guide sleeve is the upper guide, which plays a preliminary guiding role, ensures the smooth joint of the upper and lower guides, and avoids the knocking of the guide column caused by the upper and lower centering errors; the vertical part of the lower inclined surface is the second guide section, which performs vertical guidance; the two guide center lines are designed to be as close as possible to the horizontal transverse position of the punching center, that is, close to the punching stress center in the horizontal longitudinal direction, so as to realize good guidance.

[0029] (7) The centers of the two punch holders form a 30º angle with the horizontal transverse direction, and the distance from the centers to the press center is equal. The position arrangement of this punching structure makes the two cavities of the punch spread horizontally, and the operation side does not block and hinder the placement of the forgings before and after, facilitating feeding and not affecting the functional requirements when the forgings are punched. Moreover, there is no visual obstruction on the operation side, which is convenient for real-time monitoring. The position arrangement of the overall punching structure and the guide structure of the die holder makes the die holder square, the structure compact, and the discharge convenient. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a seat device structure diagram for hot forging and punching one-time punching of two pieces;

[0031] Figure 2 It is a sectional view of the seat device for hot forging and punching one-time punching of two pieces;

[0032] Figure 3 It is a schematic view of the upper die plate;

[0033] Figure 4Figure 2 is a partial enlarged view of part A of the seat device for hot forging and punching two pieces at one time;

[0034] Figure 5 Figure 3 is a schematic view of the lower die seat.

[0035] Figure: swallow tail 1, upper die plate 2, long screw bolt 3, punch holder 4, punch 5, hexagonal screw 6, guide column 7, guide column gland 8, material return plate 9, hexagonal bolt 10, support tube 11, punching concave die 12, pressing iron 13, guide sleeve 14, guide sleeve gland 15, lower die seat 16. DETAILED DESCRIPTION

[0036] The utility model will be described in further detail below in combination with specific embodiments, which are an explanation of the utility model rather than a limitation.

[0037] In order to make the personnel in the technical field better understand the utility model scheme, the technical scheme in the utility model embodiment will be described clearly and completely below in combination with the drawings in the utility model embodiment. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor should belong to the protection scope of the utility model.

[0038] The utility model discloses a seat device for hot forging and punching two pieces at one time, as shown in Figure 1 and Figure 2 , which comprises an upper die structure: the swallow tail 1 and the upper die plate 2 are connected together, the punch holder 4 is connected on the upper die plate 2, the head of the long screw bolt 3 is embedded in the special-shaped groove of the upper die plate 2, and the special-shaped groove prevents the bolt from rotating. The rod part of the long screw bolt 3 passes through the hole of the upper die plate 2 and the center hole of the punch holder 4 to connect the punch 5. When installing the punch 5, the milled flat groove on the punch is clamped to tighten the punch on the bolt. The punch holder 4 and the punch 5 are positioned by vertical direction face contact and radially adopt small gap fit, which is simple to process and reliable in positioning. This structure realizes quick and time-saving punch replacement, and is called "long screw bolt connecting punch quick replacement structure";

[0039] As shown in Figure 3 , the hexagonal screw 6 passes through the hole on the upper die plate 2 and tightens the guide column 7. In order to make the installation more reliable, the guide column gland 8 is connected on the upper die plate 9 and tightens the guide column 7 through the pressing inclined surface. The center of the two punch holders 4 is at an angle of 30º with the horizontal direction, which is designed to make the seat device as square as possible, so as not to be too huge and cumbersome, and the two punching concave dies 12 face the operating position without mutual shielding. The distance between the two punch holders 4 is as small as possible, so as to ensure that the punching force is close to the center of the pressing machine.

[0040] The long screw bolt 3 adopts M24 hexagonal bolt;

[0041] Hexagon bolt 6 uses M16 hexagon bolt;

[0042] Hexagon bolt 10 uses M24 hexagon bolt;

[0043] The upper die part is connected to the upper die plate at the middle part of the workbench of the press, and is connected to the workbench and the upper die plate at the far end of the middle part by screws, and the connection is reliable.

[0044] As shown in Figure 4 and Figure 5 , the lower die structure: two piercing dies 12 are fixed on the lower die seat 16, and are pressed by the pressure iron 13. The center line of the two piercing dies 12 is also at an angle of 30º with the horizontal direction. The support pipe 11 is placed on the lower die seat 16, the material removal plate 9 is placed on the support pipe 11, the hexagonal bolt 10 is tightened on the lower die seat 16, forming the material removal structure part. The punch 5 and the punch seat 4 can pass through the hole of the material removal plate 9. The guide sleeve 14 is embedded in the hole of the lower die seat 16, the guide sleeve gland 15 is connected to the lower die seat 16, and the guide sleeve 14 is pressed by the inclined surface; the hexagonal bolt 10 uses M24 hexagonal bolt;

[0045] The guide column guide sleeve slides up and down, and the guide sleeve is designed with a two-section guide structure, that is, the inclined surface part of the upper part of the guide sleeve is the upper guide, which plays a preliminary guiding role and avoids the upper and lower parts from being knocked by the guide column due to the change in centering. The vertical part of the lower part of the inclined surface is the second guide section, which plays a vertical guiding role to prevent the horizontal misalignment of the upper and lower parts of the seat device during work.

[0046] The long screw bolt 3 adopts a hexagonal structure with anti-rotation head, including a special-shaped groove provided on the upper die plate 2 and a matching structure of the bolt head.

[0047] An adjustable material removal gap structure is formed between the material removal plate and the support pipe.

[0048] The cooperation structure of the punch 5 and the punch mounting seat 4 includes: an axial positioning end face contact structure; a small gap cooperation structure for radial positioning,

[0049] The guide sleeve 14 is provided with a two-section guide structure, including: an upper section of a conical flared guide part; and a lower section of a cylindrical precise guide part. The taper angle of the conical flared guide part is 5-20°; preferably 10°;

[0050] The guide column 7 and the guide sleeve 14 are both provided with a gland type locking structure, including: a slope pressing structure of the guide column gland 8; and a slope pressing structure of the guide sleeve gland 15.

[0051] The distance between the two punch mounting seats 4 satisfies that the ratio of the center distance to the punch diameter is 2.1-3.8; the outer distance of the two punch hole die is 10 mm, the punch 5 is provided with a tool clamping structure, including at least two parallel flat milling surfaces arranged on the side surface of the punch.

[0052] Preferably, an opening groove is arranged on the lower die seat at the punch hole die position to facilitate installation of the quick-release punch hole die, and a U-shaped groove is arranged around the upper die plate 2 to facilitate installation on the workbench of the press;

[0053] The working process is as follows:

[0054] I. Die seat installation

[0055] 1. Install the upper die seat part and the lower die seat part respectively, hoist the die to make the guide column and the guide sleeve cooperate with each other;

[0056] 2. Hoist the die to the workbench of the press, and make the slide block descend to fix the upper die seat;

[0057] 3. Install the upper die seat while adjusting the position of the lower die seat.

[0058] 4. Observe the cooperation of the guide column and the guide sleeve and the passing of the punch and the hole by the slide block, and press the lower die seat after multiple adjustments.

[0059] II. Production and use

[0060] 1. Place a forging on each of the two punch positions.

[0061] 2. Start the press, and make the slide block descend, so that the punch structure of the upper die seat part passes through the hole of the material removal plate and descends to punch; punch off the flash, and make the press ascend after reaching the lower dead point, so that the punch with the forging clamped thereon ascends. The forging contacts the lower end surface of the material removal plate and is removed from the punch under force.

[0062] Double-punch synchronous stamping principle:

[0063] The press drives the upper die structure to descend as a whole, and transmits the pressure to the two punch mounting seats 4 through the rigid connection of the dovetail 1 and the upper die plate 2. The punch 5 descends synchronously along the 30° inclined trajectory under the fixation of the axial tensioning bolt 3.

[0064] The punch 5 passes through the reserved hole of the material removal plate 9 and is accurately positioned with the punch hole die 12 of the lower die. Since the two punches are symmetrically arranged at an angle of 30°, the punching force is symmetrically distributed along the center of the press, avoiding the problem of unilateral stamping caused by unbalanced load, and at the same time, the punch hole die 12 is not visually blocked on the operating side, facilitating real-time monitoring.

[0065] 30°inclination angle design makes the two punch center distance compression to the minimum value is about 2.1-3.8 times the diameter of the punch, while ensuring the punching force concentrated in the center of the press, significantly reduce the overall volume of the mold traditional horizontal layout need to increase 30% lateral space.

[0066] Punching is completed: after the punch 5 penetrates the workpiece, the material return plate 9 is limited by the support pipe 11 and the hexagonal bolt 10, and is in contact with the surface of the workpiece to form counterpressure.

[0067] Return material: when the upper die plate returns, the material return plate 9 fixedly limited by the hexagonal bolt 10 and the support pipe 11 remains in place, and the workpiece is peeled off from the surface of the punch 5.

[0068] Two-stage guide system

[0069] Upper guide: when the guide column 7 moves down, the tapered flared 5-20° taper of the upper end of the guide sleeve 14 guides the guide column to quickly and coarsely position, compensates for the initial alignment deviation of the upper and lower molds, and avoids hard collision.

[0070] Second-stage guide: the gap between the guide column and the lower cylindrical precise guide part of the guide sleeve is 0.3-0.4mm (double-sided), high-precision vertical guidance is realized, and the final centering error of the punch and the concave die is ensured to be less than 0.2mm.

[0071] The double-punch synchronous operation of the utility model makes two-hole machining completed in a single stamping cycle, which is twice as efficient as the traditional single punch, and is suitable for batch production of symmetrical multi-hole parts such as automobile connecting rods and gear blanks.

[0072] The small gap between the punch and the mounting seat ensures reliable positioning and does not affect the rotation.

[0073] The quick-change punch long screw bolt 3 is designed with a hexagonal bolt head and an O-shaped groove anti-rotation, and only needs to rotate the punch flat surface to complete disassembly and installation, and the die changing time is less than 3 minutes.

[0074] The pressing iron 13 provides vertical pre-tightening force to vertically press the punching concave die 12.

[0075] Hot forging adaptability: the gap between the material return plate 9 and the punch or punch seat 5 is designed to be at least 1mm on one side, which ensures passing and prevents jamming.

[0076] In the description of the utility model, it is necessary to understand that the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relation based on the orientation or positional relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model indicated or implied by the device or element, which must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0077] It should be noted that the terms "first", "second", and the like in the description and claims of the utility model and the above drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0078] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected, or it can be communicated; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. When the assembly is referred to as "fixed to" another assembly, it can be directly on another assembly or there can be a middle assembly. When a component is considered to be "connected" to another component, it can be directly connected to another component or a middle component can exist at the same time. When a component is considered to be "set on" another component, it can be directly set on another component or a middle component can exist at the same time.

[0079] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include the first and second features directly contacting, or can include the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "on", "above" and "on the surface" of the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0080] It should be understood that, when used in the present specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0081] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments and is not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0082] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art makes some changes, modifications and equivalent changes within the scope of the technical scheme of the present application by using the above disclosed technical content, which are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present application are still within the protection scope of the technical scheme of the present application.

[0083] The above is only a preferred embodiment of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art makes some changes, modifications and equivalent changes within the scope of the technical scheme of the present application by using the above disclosed technical content, which are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A device for hot forging and punching two parts at a time, characterized in that, include, The upper mold structure includes an upper template (2), two punch seats (4) symmetrically and obliquely arranged on the upper template (2), and a punch (5); the punch seats (4) and the punch (5) are installed together. The lower die structure includes a lower die base (16), two punching dies (12) symmetrically arranged on the lower die base (16), and a support tube (11); the support tube (11) is arranged on the lower die base (16), and a stripper plate (9) is installed on the top of the support tube (11); the punch seat (4) and the punch (5) pass through the stripper plate (9) and are located directly above the punching die (12); The upper template (2) is provided with guide mechanisms on both sides; the guide mechanisms are located between the upper template (2) and the lower mold base (16), and are respectively connected to the upper template (2) and the lower mold base (16).

2. The hot forging punching device for punching two parts at once, as described in claim 1, is characterized in that... The punch seat (4) is connected to the punch (5) by a long screw bolt (3); the head of the long screw bolt (3) is embedded in the groove of the upper template (2) to restrict rotation; the shank of the long screw bolt (3) passes through the center hole of the upper template (2) and the punch seat (4) in sequence and is threadedly connected to the punch (5) to form a long screw connection punch quick-change structure; the punch seat (4) and the punch (5) are installed by vertical surface contact positioning and radial small clearance fit.

3. The device for hot forging and punching two parts at once, as described in claim 1, is characterized in that... The guiding mechanism includes a guide post (7) and a guide sleeve (14); the guide post (7) is disposed on both sides of the upper template (2), and the guide sleeve (14) is embedded in the hole of the lower mold base (16); the guide post (7) and the guide sleeve (14) are installed together.

4. The hot forging punching device for punching two parts at once, as described in claim 3, is characterized in that... The guide post (7) is fixed to the upper template (2) by hexagonal screws (6); The guide sleeve (14) is fixed to the lower mold base (16) by the inclined pressing structure of the guide sleeve cover (15). The guide post (7) is fixed to the upper template (2) by the inclined pressing structure of the guide post cover (8); The guide post cap (8) is connected to the upper template (2), and the guide sleeve cap (15) is connected to the lower mold base (16).

5. The hot forging punching device for punching two parts at once according to claim 3, characterized in that, The guide sleeve (14) adopts a two-stage guide structure, including an initial guide section with an upper inclined surface and a lower vertical guide section.

6. The device for hot forging and punching two parts at once, as described in claim 1, is characterized in that, The upper surface of the upper template (2) is provided with a dovetail (1), the dovetail (1) and the upper template (2) are fixedly connected, and the upper template (2) is connected to the press worktable through the dovetail (1).

7. The device for hot forging and punching two parts at once, as described in claim 1, is characterized in that... The punching die (12) is pressed and fixed on the lower die base (16) by the pressure iron (13).

8. The device for hot forging and punching two parts at once, as described in claim 1, is characterized in that... The center of the two punch seats (4) forms a 30° angle with the horizontal direction, and the line connecting the centers of the two punching dies (12) forms a 30° angle with the horizontal direction.

9. The device for hot forging and punching two parts at once, as described in claim 1, is characterized in that... The punch (5) has a milling groove on its cylindrical surface, and the lower die base (16) has an opening groove at the punching die (12); the upper die plate (2) has a U-shaped groove around its perimeter.

10. The device for hot forging and punching two parts at once according to claim 1, characterized in that, The ejector plate (9) is provided with through holes for the punch (5) and punch seat (4) to pass through; The lower mold base (16), the support tube (11), and the ejector plate (9) are fixedly connected by hexagonal bolts (10).

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